"We gunna get stuck tonight." or
"That girls ass was so fine i was stuck" or
"I was so tired last night, i was more stuck than a paraplegic" or the more famous "She started to rub my penis and i got stuck"

When you are very high on a dissociative anaesthetic drug (ketamine, pcp, dextromethorphan, others), you are either unable to move, or forget that you CAN move. Thus, you are stuck.

This term applies only to dissociative drugs, using the term in reference to the high of any other drugs is improper.

You don't get stuck on marijuana, your just too stoned. The people that say this for marijuana or other drugs would stop using it in reference to those drugs, if they ever actually had the experience of being truly "stuck," on dissociatives.